Abstract
To study the antiseismic performance of the high-strength concrete composite shear wall with built-in steel plates, an experiment on a high-strength concrete composite shear wall with four built-in steel plates (SPRCW-1∼4) was set up. Based on the experimental result, the paper discusses the antiseismic performance, failure mode, and failure mechanism of the high-strength concrete composite shear wall with built-in steel plates under different steel ratios and different positions of steel plates. The experimental result has shown that the differences in steel plate position and steel ratios have certain effects on wall cracking. The use of high steel content and the placement of steel plates on both sides of the wall can limit wall cracking to some extent. When the bearing capacity of the steel plates located on both sides of the wall is larger than that in the middle of the wall, a high content of steel in the wall can effectively increase the bearing capacity of the test piece to some extent. Under a high axial compression ratio, the horizontal bar of the wall can substantially limit the vertical cracks in concrete arising from compression. Moreover, the built-in steel plates in the shear wall play a significant role in inhibiting the propaganda of the oblique cracks under the action of earthquakes. The research result has very good economy and operability and can provide a basis for promotion and application of the mid- and high-rise buildings in regions with high seismic intensity.
Highlights
Shear walls are able to bear large seismic force and consume enough energy released during the earthquake and play a very important role in guaranteeing the safety of high-rise buildings. e shear walls of high-rise buildings in high seismic intensity regions have a large size, high rigidness, and high bearing capacity but poor ductility and energy dissipation capacity
In case of an intensive earthquake, they would lose their bearing capacity prematurely and the antiseismic performance of the walls would not be brought into full play
Many scholars have conducted a large number of tests and studies on the steel plate concrete shear walls
Summary
Shear walls are able to bear large seismic force and consume enough energy released during the earthquake and play a very important role in guaranteeing the safety of high-rise buildings. e shear walls of high-rise buildings in high seismic intensity regions have a large size, high rigidness, and high bearing capacity but poor ductility and energy dissipation capacity. E shear walls of high-rise buildings in high seismic intensity regions have a large size, high rigidness, and high bearing capacity but poor ductility and energy dissipation capacity. Many scholars have conducted a large number of tests and studies on the steel plate concrete shear walls. Wei et al [5] have studied the antiseismic performance of the novel partially connected buckling constrained steel plate shear walls. Guo and Yuan [8] have conducted experimental research on the steel-shear wall composite structures under cyclic loading. Shafaei et al [10] have studied the framework structure in the composite shear wall and the steel-concrete interactions. E results of the research on the law of structural rigidness, mechanical properties, and crack initiation of high-strength concrete composite shear walls under di erent positions of steel plates and di erent steel ratios Di erent positions and sizes of the strip-shaped steel plates are used to substitute for di erent parameters of the slotted steel plates, decreasing the steel content and the degree of di culty with building slotted steel plate composite shear walls and saving the construction cost. e results of the research on the law of structural rigidness, mechanical properties, and crack initiation of high-strength concrete composite shear walls under di erent positions of steel plates and di erent steel ratios
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